Junction-box.



G. W. DAVIS.

JUNCTION BOX.

APPLIOATION FILED JAN.11,1913.

Patented Mar. 2,1915.

FiBul- FIEE.

iNVENTOR N 5? I Q 3 unrrun STATES PATENT ornron. l

CHARLES W. DAVIS, F EDGEWOR'IH, PENNSYLVANIA, HASSIG-NO R TO STANDARD UNDERGROUND CABLE COMPANY, OF PITTSBURGH, PENNSYLVANIA, A. 00320- BATION OF PENNSYLVANIA.

JUNCTION-BOX.

Original application filed March 24,1909, Serial No. 485,476. Divided andthis application filed January I Specification of Letters Patent.

Patented Mar. 1915.

11, 1913. Serial No. 741,574;

To all whom it may concern: 1 v

Be it known that 1, CHARLES" W. DAVIS, residing at Edgeworth, in the county of Allegheny and State of Pennsylvania, a

citizen of the United States, have invented or discovered certain new and useful Improvements in-Junction-Boxes, of which improvements the following is a specification.

My present application is a division of my pending application, Serial No. 485,476, matured into Patent No. 1,093,607, April 21,

My invention relates to junction-boxes consisting of a easing into which a plurality of electrical cables are led, and the conductor thereof interconnected for the purpose ofequalizing the currents carried thereby and for the .urther purpose of introducing ,a

v feed line where necessary.

The object ofimy invention is tofprovide a compact junction-box which may be easily installed, and to which access may be readily had for purposes of repair or alteration.

"""" mike-non In the accompanying drawings, which form part of my specification, Figure 1 is a plan view of a junction-box illustrating an embodiment of my invention, the cover and half of the dividing partition being removed in order to show the full interior construction; and Fig. 2 is a combined section and .vided with a plurality of cable-receiving orifices 2, and with a suitable lid 3. \Vithin such casing I mount a transverselyextending removable partition l, which divides the space therein into 'two chambers. The said partition is formed of a plate of insulating material, such as porcelain, and is preferably divided into separately removable portions as will be explained hereinafter. Mounted/upon said plate i and extending ...therethrough are a plurality of electrical studs 5, 6 and 7 a-rran ed in three circumferential lines. In thelnner line the studs 5 are adaptedto beilectrically inter-connect ed on the upper side of said partition 4, and

\ each is provided with a downwardly extend ing'stem adapted to be sweatedupon a neutral conductor of an electrical cable. In the middle line the'studs 6 are provided on the upper side of the partition 4 with yokes or spring-jacks adapted to receive knife blade contacts of the radially arranged cartridge fuses 8, and said studs 6 are also provided with downwardly extending stems adapted to be sweated upon cable conductors. In the outer line the studs 7 are also provided on the upper side of the portion l-with suit,

'65 fuses 8, and are provided on the loweu side of said partition with stems adapted to be able yokes to receive the outer end ufthe connected to bus-bars 9.

In order to suitably rotect the bar s91. form a supplementary c amber for them, means of an annular chambered member 10,

.which is open-mouthed toward the lower side of the plate 4:, as shown, and which is connected thereto by) means of screws. 11. In case the junction ex is employed in con nectionwith high voltage cables, the cham- -bered member may be filled with an insulating compound independently of the other part of the junction-box: Said chamber, as well as the stud-provided partition 4 is preferably supported by a plurality of compartment-forming walls 12, extending from the bottom of the casing 1, and formed inte grally therewith.

The be shown herein is particularlyadapted to unite, electrically, like potential conductors of four cables, each having a neutral and three current-cafrying conductors. To such an end the casing is provided with four cable orificesQ, {and the arrangement of theparts within the casing is such that the electrical conductors of the several cables are carried toward the central portion of the box and there united to the studs .5 and 6, the neutrals to the 'studs;5, i; and the current-carrying conductors to the studs 6; and the three bus-bars 9, being ring-like in form, are each electrically con nected, through a stud 7, fuse Sand Studfi; Y 10 To the end that the entirestructuremay,..-i

to one conductorof each cable.

be assembled, and also that after being assembled it may be easily accessibleg for alterations or repairs, I diiridethejparti 'tion l into a central circular portion,

a surrounding ring lilge portion 'asgshonih in the drawings. Furthermore, the outer portioir'of said partition'is again divided intofour segments each of which carries the three fuse bars that are electrically connected to the conductors of a single cable. The central portion of sai'd'partition is preferably supported by a post 13 extending from the bottom ofthe casing 1, while the outer portions, as described above, are borne indirectly by the Walls 12. Between the lines of studs 5 and 6, I provide an an nular leakage-preventing screen l t, which extends between the inner and outer portions of the partition 4 and on each side thereof.

After the conductors are assembled, as

shown and described, .those in the lower part of the box are embedded in a suitable insulating compound. To the end that the conductors of each cable may be separately immersed in such compound, I form, by means of theivalls 12 and 15, compartments in the bottom of the box corresponding in number to cables leading therein. These insulation -;containing compartments 3 are also formed with a View to accomplish a saving in the compound, and to such an end the walls 12 are of irregular form rather thanbeing radiahand the cylindrical Wall 15 keeps the compound from the central portion of the casing, where such compound is not needed. i

I claim as myinvention:

1. In a junction box structure, the combinatiorrof a casing, aremovable transversely extending partition mounted within said casing and dividing it into two chambers,

electrical conductor studs extending through said partition, a sl'ipplementary chamberf orining member secured to the lower side of said partition and provided with conductors having electrical connection to some of said studs, and electrical conductors en tering said casing beneath said partition and connected to other studs of said partition.

' 2. In a junction box structure, the combiw" nation of a casing, a removable transversely extending partition mounted within said casing and dividing it into two chambers, electrical conductor studs'extending through said partition, an annular trough-shaped member below said partition andhaving its open side adjacent to the face thereof, conductors Within said annular member electrically connected to some of said studs, and electrical conductors entering said casing beneath said partition and connected to other studs thereof.

3. In a junction-box structure, the combination of a cylindrical easing provided interiorly with aplurality of compartmentforming walls, a transversely-extending removable partition rovided with a plurality of electrical studs arranged in inner and outer circumferential lines and having contact portions adapted to receive radiallyarranged'fuses, a peripheral chamber-forming member secured to the lower side of said partition and removable therewith, said chambered member and said partition being supported by said walls, a bus-bar within said ,chambered member electrically connected to said outer studs, and means for connecting said inner studs to electrical cable conductors. i

4. In a junction-boxstructure, the combination of a circular casing, a transverse1yextending partition mounted within said casing and dividing it into two chambers, saidpartition. consisting of separately supported central and peripheral portions each provided with electrical studs, and elec-' trical conductors entering said casing beneath said partition and connected to the studs of each portion of said partition.

5. In a junction-box structure, the combination of a circular casing, a transversely extending partition mounted within said casing anddividing it into two chambers, saidpartition consisting of separately supported and separately removable centraland peripheral portions each provided with electrical studs, electrical conductors entering said casing beneath said partition, and connected to the studs of'each portion of said partition, and a leakage-preventing screen between said partition portions.

In testimony whereof I have hereunto set my hand.

CHARLES W. DAVIS. Witnesses:

ARTHUR A. ANDERSON, RALPH B. Wnicox. 

